Check in for task 1,4 and 5

Adding pipelineID to httpresponse message, clearner code for task1

Commit for Refactored task

Unit tests

Removing extra whitespaces.

Removing extra whitespaces.

Removing tabs whitespaces

Making Code tidier.

Style issues Fix

Test-tidy Fixes

components/devtools_traits/lib.rs

@@ -264,6 +264,7 @@ pub struct HttpRequest {
     pub method: Method,
     pub headers: Headers,
     pub body: Option<Vec<u8>>,
+    pub pipeline_id: PipelineId,
 }
 
 #[derive(Debug, PartialEq)]
@@ -271,6 +272,7 @@ pub struct HttpResponse {
     pub headers: Option<Headers>,
     pub status: Option<RawStatus>,
     pub body: Option<Vec<u8>>,
+    pub pipeline_id: PipelineId,
 }
 
 pub enum NetworkEvent {